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The Hidden Cost of Poor Airflow in High-Performance Commercial Buildings

Poor airflow in commercial buildings leads to higher energy bills, reduced indoor air quality, and HVAC wear. Learn how to identify and solv

Ava Montini

Mar 24, 2025

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Why airflow inefficiencies drive up costs, compromise indoor air quality, and create hidden challenges for facility managers


Most commercial and institutional buildings today are designed with performance and efficiency in mind. Energy benchmarks, ESG goals, and occupant well-being are often front and center. But despite those efforts, one critical element of building performance is consistently underdiagnosed: airflow.


Poor airflow can silently affect every corner of your building’s operations — from higher energy consumption and HVAC maintenance costs to reduced indoor air quality (IAQ) and missed sustainability opportunities. It rarely shows up as a red flag on day one, but over time, it chips away at performance in ways that are both measurable and avoidable.


Inefficient Airflow Increases Energy Use — Even in “Efficient” Buildings

In many commercial buildings, HVAC systems account for roughly 30–40% of total energy consumption, according to Natural Resources Canada and ASHRAE. But when airflow is restricted, that percentage can climb significantly.


The most common culprits are high-resistance filters, dirty or aging ductwork, unbalanced systems, or outdated fans. These conditions increase static pressure, which forces HVAC fans to work harder and longer to achieve required airflow levels.


According to a study by the U.S. National Institute of Standards and Technology (NIST), buildings with airflow-related HVAC issues can see energy use increase by up to 30% compared to optimized systems. [1]


Even minor issues can have an outsized impact. A 100,000 sq. ft. office building experiencing elevated fan energy use due to clogged filters or inefficient duct design could face annual utility costs tens of thousands of dollars higher than necessary. For building owners managing multiple sites, that inefficiency compounds quickly.


Airflow and Indoor Air Quality Are Closely Linked


Buildings are dynamic systems, and air quality tends to suffer when airflow is compromised. Insufficient airflow can lead to poor ventilation, uneven air distribution, and pockets of stagnation in rooms or zones. These areas often experience elevated levels of carbon dioxide (CO₂), volatile organic compounds (VOCs), and particulate matter — especially in high-occupancy spaces.


A 2015 study from Harvard’s T.H. Chan School of Public Health found that employees working in well-ventilated buildings performed 61% better on cognitive tasks than those in typical buildings with poor ventilation and air quality. [2]


In schools, researchers have found that students in classrooms with improved ventilation perform better on standardized tests. [3] In healthcare facilities, inadequate air movement can increase the risk of airborne illness transmission.


Common complaints like “stuffy rooms,” temperature inconsistencies, or fatigue can often be traced back to airflow and ventilation issues — even when temperature setpoints and filtration standards are technically being met.


Poor Airflow Wears Down HVAC Systems Faster


Inefficient airflow costs more on your energy bill and accelerates mechanical wear and tear. When fan motors, compressors, and dampers are forced to operate under continuous load, components degrade faster than expected.


This leads to:

  • More frequent repairs and service calls

  • Shortened equipment lifespan

  • Greater downtime and occupant discomfort during peak seasons


A study from the National Air Duct Cleaners Association (NADCA) notes that air distribution restrictions are a key factor in premature HVAC failure and reduced system capacity. [4]


The cost of replacing a rooftop unit, for example, can range from $10,000 to $25,000, depending on building size and complexity — not including indirect costs from temporary system downtime.


Sustainability Targets Can Be Quietly Undermined


Many facilities today are pursuing ESG goals, LEED certification, or local emissions reduction mandates. But airflow inefficiencies can quietly work against those targets by increasing Scope 2 emissions (energy-related emissions) and filter waste.


High-resistance air filters, mainly traditional pleated filters, can contribute to this in two ways:

  1. Increased energy use due to pressure drop

  2. Frequent changeouts, leading to more waste and landfill contribution


According to a 2021 study in Building and Environment, filter pressure drop is one of the most overlooked contributors to unnecessary HVAC energy use — especially when filters are overused or under-maintained. [5]


If a building claims progress in sustainability, it’s important to ensure that filtration and airflow practices align with those claims—both from an energy and waste standpoint.


Missed Opportunities for Incentives and Cost Recovery


One of the lesser-known downsides of inefficient airflow is the lost opportunity to qualify for energy retrofit incentives.


Many utility and government programs across North America offer rebates, grants, or low-interest financing for businesses upgrading HVAC systems, controls, and low-pressure filtration. But to be eligible, buildings often need to demonstrate quantifiable improvements in system performance.


For example, Ontario’s Save on Energy Retrofit Program offers up to 50% of project costs for energy-efficiency upgrades, including those related to ventilation, air handling units, and demand control ventilation systems. [6]


Without data on airflow improvement or energy reduction — or without addressing underlying airflow inefficiencies — buildings may fail to qualify, leaving funding on the table.


Practical Steps to Address Airflow Challenges


The good news is that improving airflow doesn’t require a major capital project. Many impactful changes can be made within existing operations and maintenance cycles.


Here’s where most facilities can start:

  • Conduct a static pressure and airflow assessment to identify bottlenecks

  • Replace high-pressure filters with low-pressure, high-efficiency alternatives

  • Balance and tune your HVAC system, especially if zones have changed due to new usage patterns

  • Install real-time IAQ monitors to detect issues as they emerge, not after complaints arise

  • Track filter changeouts and energy use to capture data for future incentive applications


These strategies are already being implemented in facilities across North America — and in most cases, they deliver measurable improvements in energy efficiency, equipment reliability, and occupant satisfaction.



Airflow may not be the most visible part of your building, but it’s one of the most influential. When ignored, it quietly drives up energy costs, reduces system lifespan, and compromises air quality.


For facility managers and business owners focused on performance, sustainability, and operational clarity, airflow should be on the radar — not just as a maintenance metric but as a lever for long-term efficiency and resilience.


Addressing airflow challenges is a straightforward, high-ROI step that supports healthier, more cost-effective, and future-ready buildings.

How Air Quality Can Affect Your Happiness

Writer: Jennifer CrowleyJennifer Crowley
Young woman with long brown hair outside happily breathing in the fresh air
The negative impacts of poor air quality are significant and widely recognized, as they can directly affect health, cognitive performance, and labour productivity.

Air pollution is a problem that affects millions of people around the world, and its effects extend far beyond just physical health. There is growing evidence to suggest that air pollution can also have adverse effects on mental and emotional health.


Air pollution and its impact on mental health is a growing concern that cannot be ignored. Emerging research links exposure to environmental pollutants, including sources from air pollution, to increased prevalence and/or severity of mental disorders. Understanding the relationship between air pollution and mental health is a significant public health concern, given that 99% of the world’s population lives in environments that do not meet World Health Organization air quality guidelines.


The Science Behind Happiness

Happiness is a fundamental part of our well-being. It is a state of mind characterized by positive emotions, contentment, and a sense of fulfillment. Research has shown that happiness is not just a subjective feeling but also impacts physical and emotional health.


Happy people tend to have better cardiovascular health and a more robust immune system and are more likely to live longer. In addition, happiness has been linked to lower levels of stress, anxiety, and depression.


The science of happiness has led to the development of positive psychology, a field dedicated to studying and promoting happiness and well-being. Theorists and researchers in the field have sought to identify the elements of a good life. They have also proposed and tested practices for improving life satisfaction and well-being.


Air Quality and Happiness

The negative impacts of poor air quality are significant and widely recognized, as they can directly affect health, cognitive performance, and labour productivity. For example, the link between air pollution, infant mortality, and respiratory diseases is well-established. According to the World Health Organization, around 7 million deaths are attributed to air pollution annually.


Anxiety and depression are the most common mental disorders across the globe and can increase an individual’s risk of suicide attempts and completion, adversely affecting family and social relationships.


A 2020 study in Toronto, Canada, validated this link between air pollution and emergency room visits for mental health symptoms. Looking at 83,985 emergency room visits for people aged 8-24 between April 2004 and December 2015, researchers found that increases in PM2.5, ozone, and nitrogen dioxide were all associated with increased emergency room visits, sometimes up to 5 days after initial exposure to that pollutant.


Another example published in Nature Human Behaviour comes from China. Analyzing data from 144 Chinese cities, they found that self-reported happiness was significantly lower on days with relatively higher pollution levels.


Poor air quality can also have physical health effects that can indirectly impact mental and emotional health. For example, respiratory problems, heart disease, and other physical ailments can cause stress, anxiety, and other mental health problems.


The Relationship Between Clean Air and Happiness

One factor that comes into play regarding air quality is geographical location. People who live in areas with high levels of air pollution are more likely to experience health problems and decreased happiness levels. For instance, people living near refineries are exposed to more nickel and vanadium, while those near coal-fired power plants breathe particles with higher sulphate content. Neighbourhoods along busy roads have more nitrates from vehicle exhaust.


The climate also plays a significant role in air quality. The interaction between pollution and climate change will impose an additional “climate penalty” for hundreds of millions of people, according to a new report from the World Meteorological Organization (WMO). The areas predicted to be most impacted by climate change, primarily located in Asia, are inhabited by approximately 25% of the global population. These regions may experience an intensification of surface ozone pollution events, resulting in adverse physical and mental health consequences for hundreds of millions of individuals.


The Importance of Prioritizing Air Quality

Given the significance of the problem, policymakers must prioritize air quality in their decision-making. This means supporting initiatives that reduce pollution, such as renewable energy projects and developing regulations that promote clean air. It also means supporting research into the effects of air pollution on mental health and finding ways to raise public awareness about the issue.


Studies propose that air pollutants, such as NH3, NOx, NMVOCs, SOx, CO2, and PM 2.5, may affect life satisfaction, happiness, or optimism. This suggests that environmental policies focused on reducing air pollution will not only positively impact the health of future generations but, at the same time, will increase the present individual’s quality of life.


Improve IAQ to Increase Happiness

A survey commissioned by the Building Engineering Services Association (BESA)reports that almost 70% of office workers believe poor air quality in their workplace harms their day-to-day productivity and well-being.


Research shows people who regularly breathe polluted air experience changes within the brain regions that control emotions. As a result, they may be more likely to develop anxiety and depression than those who breathe cleaner air. It has also been proven that those who breathe fresh air are less stressed than those who breathe polluted air, proving the theory that good air quality and happiness go hand in hand. The more fresh air you get, the more oxygen you intake, which increases the serotonin (the happy hormone) you inhale, consequently making you happier.


In conclusion, air quality is essential to our overall well-being, and policymakers and individuals must prioritize it accordingly. Clean air contributes to our physical and emotional health, and reducing air pollution can have significant economic and social benefits. By working together to support clean air initiatives, we can create healthier, more sustainable communities and happier individuals.

Explore expert insights, stay up to date with industry events, and gain a deeper understanding of the cutting-edge developments that are revolutionizing the indoor air quality landscape within Blade Air's comprehensive Insights Hub.

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